$\begingroup$This question has generated a large number of plausible answers, which suggests that it may be under-defined. Perhaps you could add some more lines to the riddle to further narrow down the solution.$\endgroup$
– GentlePurpleRain♦Sep 2 '16 at 15:42

11 Answers
11

Because gravity holds stuff together and is the cause of revolution of planets around the Sun

few truly know me or my execution

Something about how General Relativity is not so widely known or understood unless you are a physicist?

relatively speaking, I have two solutions

Probably the fact that there's Newtonian gravity and General relativity, two models of gravity? Maybe? That "relatively" makes me think that you're referring only to GR...

I work not through force, but mass distribution.

The gravitational field is related to the energy-momentum tensor that for massive object contains information about mass distribution and the idea of a "force" of gravity is only true in Newton's theory

Second solution (poorly explained):

Communism

I bring things together, start revolutions

Not sure about the first bit, but the idea of a revolution is strong in communism

few truly know me or my execution

Now there's only two states with a communist government (China and Cuba)

relatively speaking, I have two solutions

--- is this only about how the riddle has two solutions?

I work not through force, but mass distribution.

One of the ideas of communism is the mass distribution of goods among the population

$\begingroup$General relativity is one of the solutions, newton's theory is not. "I work not through force, but mass distribution" shows this. Also, the second solution has yet to be guessed.$\endgroup$
– AricSep 1 '16 at 15:28

"Peace not War!" Is a popular revolutionary tactic among citizens of countries. Love Brings people together, their hearts connect, as they fall in love ;)

few truly know me or my execution.

It's not common knowledge how Love works at all, in fact I still don't understand it all that much, aside from the fact that it's something to do with a chemical in the brain. Nor do they know why or how they fall in love. The execution of their love.

relatively speaking, I have two solutions.

You can learn to love the other person, Or you are already in love with them. (Honestly this is the hardest of all the steps to answer)
It could also be referring to Maternal/Paternal love, (Family love) Or it could mean relationship love.

It might even be that all of the above are grouped together, and the two solutions are Love for others and love for yourself.

And if we group that with the rest under love for people, we can think of 'Love for what we do' Like our hobbies, or work, etc.

I will go for the second possible answer here since we all agree that the first one is:

Gravity.

My second option is:

Money

I bring things together, start revolutions

There is a saying "Money makes the world go round". I would add "only if you spend it on alcohol and you drink it. Then it literary makes your world go around". Usually revolutions start because of money.

few truly know me or my execution

Not many people understand the "man made, artificially sustained" monetary system.

Anarchy brings the population together and revolutions are started because of it

few truly know me or my execution

Most people don't really know what Anarchy is and how it works

relatively speaking, I have two solutions

Kinda of a longshot but Anarchy has two major point of views of how it is achieved. Insurrecionary Anarchy and social Anarchy. Or, you can talk about communism and socialism, two major systems that seek to become an anarchy.

I work not through force, but mass distribution.

Although some think the contrary, Anarchy can't be achieved by force, because it needs all population, or at least, the major part to it work